Hybrid Corn CH100147 Breeding via Cytoplasmic Male Sterility
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Solution Overview
Problem
Current corn breeding techniques face challenges in developing hybrid varieties that combine desirable traits such as high yield, disease resistance, and uniformity, while maintaining genetic stability and avoiding self-pollination, which limits the efficiency of hybrid seed production.
Innovation Solution
The development of the hybrid corn variety CH100147, which incorporates genetic modifications and cytoplasmic male sterility traits to prevent self-pollination, along with a process for crossing parent plants to produce hybrid seeds, utilizing genetic loci for traits like herbicide resistance and disease resistance, and tissue culture methods for regenerating plants with specific characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional self-pollination breeding methods are used, then genetic uniformity can be achieved, but hybrid vigor and disease resistance are limited
Solution Approach 1:
The breeding process is segmented into distinct phases: developing homozygous inbred lines through self-pollination, then crossing these lines to produce hybrid offspring. This segmentation allows each phase to optimize for its specific goal (uniformity in inbreds, vigor in hybrids) without compromise
Solution Approach 2:
The patent changes the pollination parameter from self-pollination to cross-pollination when producing the final hybrid variety. This parameter change enables the transition from genetic uniformity (in inbreds) to hybrid vigor (in F1 hybrids) while maintaining controlled breeding
2Productivity
If cross-pollination is used to produce hybrids, then hybrid vigor and yield are improved, but self-pollination control becomes more difficult
Solution Approach 1:
The patent uses male sterility (cytoplasmic or genetic) as an intermediary mechanism to control pollination. This intermediary automatically prevents self-pollination in the female parent, eliminating the need for manual emasculation and simplifying hybrid seed production while ensuring cross-pollination
3Reliability
If manual emasculation is performed to prevent self-pollination, then hybrid seed purity is maintained, but production efficiency and cost increase
Solution Approach 1:
The patent employs self-sterilization mechanisms where the female parent plant automatically prevents its own self-pollination through male sterility traits. This self-service approach eliminates the need for labor-intensive manual emasculation, maintaining hybrid seed purity while dramatically improving production efficiency and reducing costs
4Stability of the object's composition
If multiple breeding generations are advanced to combine traits, then genetic stability is improved, but time to market and development costs increase
Solution Approach 1:
The patent performs preliminary development of homozygous inbred lines with desired traits before the final hybrid cross. This preliminary action ensures genetic stability is established in the parental lines, allowing the final hybrid to inherit stable, predictable traits without requiring additional generations of advancement
Solution Approach 2:
The patent applies different breeding strategies to different parts of the breeding program: intensive self-pollination and selection to achieve homozygosity in parental lines, then a single cross to produce the hybrid. This local quality approach optimizes each stage for its specific purpose, reducing overall development time while maintaining genetic stability
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH100147. The invention thus relates to the plants, seeds and tissue cultures of the variety CH100147, and to methods for producing a corn plant produced by crossing a corn plant of variety CH100147 with itself or with another corn plant, such as a plant of another variety. The invention further relates to genetic complements of plants of variety CH100147.